专题2 代词、数词（练习）-2027年云南省（职教高考）《英语一轮讲练测》（原卷版+解析版）

**基本信息** 以支架式教学为核心，通过分层训练构建代词、数词从基础到真题的完整进阶路径，强化语言应用能力与应试技巧。 **专项设计** |模块|题量/典例|题型特征|知识逻辑| |----|-----------|----------|----------| |系列考点夯实练|15题（代词）+10题（数词）|基础概念辨析题，覆盖人称/物主/反身代词、基数词/序数词核心用法|从具体代词分类到数词语法功能，形成"概念识别-语法规则-基础应用"的逻辑链| |核心突破提升练|15题（综合）|语境应用型题目，涉及不定代词区分、数词固定搭配|通过易混点对比（如few/little、other/another）深化知识迁移能力| |真题溯源过关练|10题（2022-2026年真题）|高考原题重现，聚焦高频考点（如物主代词辨析、数词复数形式）|对接考情，强化"考点-题型-解题策略"的应试逻辑|

编写说明：2027年云南省（职教高考）《英语一轮讲练测》内含复习讲义、复习课件、专项训练、综合训练，在编写中融入支架式教学理念，紧扣教材，将知识拆解整合为体系化专题清单，以挖空式讲解搭配知识再现型练习筑牢基础，再通过分层专项训练、综合进阶训练实现知识巩固与能力提升。针对性强，实操性好，为一轮复习搭建从知识梳理到能力突破的完整进阶路径，高效赋能备考提分。 本专题是2027年云南省（职教高考）《英语一轮讲练测》的第2个专题，内容为代词、数词。 2027年云南省（职教高考）《英语一轮讲练测》 专题2 代词、数词（专项训练） 目录 01 系列考点夯实练 02 核心突破提升练 03 真题溯源过关练 【考点1 代词】 1. — Is this ______ dictionary? — No, it’s not ______. It’s ______. A. your; mine; hers B. yours; my; her C. your; my; her D. yours; mine; hers 2. Our classroom is clean, but ______ is cleaner than ______. A. their; our B. theirs; ours C. their; ours D. theirs; our 3. I saw ______ in the park yesterday afternoon. A. they B. their C. them D. theirs 4. The children enjoyed ______ at the birthday party. A. them B. their C. themselves D. theirs 5. My brother taught ______ English by watching videos. A. he B. him C. his D. himself 6. ______ of the two answers is correct. Please try again. A. Both B. All C. Neither D. Either 7. There are many trees on ______ side of the street. A. both B. all C. every D. either 8. Some people like coffee, ______ prefer tea. A. other B. others C. the other D. another 9. I don’t have ______ money with me. Could you lend me ______? A. some; any B. any; some C. any; any D. some; some 10. There is ______ milk in the fridge. Let’s go and buy some. A. Few B. a few C. little D. a little 11. I have ______ friends in this city, so I don’t feel lonely. A. Few B. a few C. little D. a little 12. The book on the desk is ______. Please give it to ______. A. his; him B. his; his C. him; his D. him; him 13. — Who is knocking at the door? — ______ must be Tom. A. He B. It C. This D. That 14. ______ of the students in our class has a new dictionary. A. Every B. Each C. Both D. All 15. Help ______ to some fish, children! A. You B. your C. yourself D. yourselves 【考点2 数词】 16. There are ______ days in a week. A. the seven B. seventh C. seven D. the seventh 17. He lives on ______ floor of the building. A. five B. fifth C. the five D. the fifth 18. Please read ______ to us. A. Lesson Ten B. the Lesson Ten C. the Tenth Lesson D. Tenth Lesson 19. My cousin is a ______ boy. A. five-years-old B. five-year-old C. five years old D. five year old 20. It’s 9:45. We can also say it’s ______. A. nine forty-five B. a quarter to nine C. a quarter past nine D. half past nine 21. There are about two ______ students in our school. A. thousands B. thousand C. thousands of D. thousand of 22. September is ______ month of the year. A. the ninth B. the nineth C. nine D. ninth 23. He was born on ______. A. 1999 June 1 B. June 1, 1999 C. 1999 1 June D. 1 June 1999年 24. ______ people visited the exhibition last week. A. Hundred B. Hundreds C. Hundreds of D. Hundred of 25. We are in ______ now. A. the 21 century B. 21 century C. the 21st century D. 21st century 26. Please turn to ______. A. Page 5 B. the page 5 C. 5 Page D. the 5 page 27. He got ______ in the English exam. A. score 90 B. 90 score C. a 90 D. 90 scores 28. My grandmother is ______ years old. A. seventy B. the seventy C. seventieth D. the seventieth 29. There are ______ people in my family. A. the fourth B. four C. fourth D. the four 30. He came ______ in the race. A. two B. the two C. second D. the second 31. ______ room is much bigger than ______. A. Ours; theirs B. Our; their C. Our; theirs D. Ours; their 32. ______ of the three students can answer the question. Let me teach you. A. Both B. All C. None D. Neither 33. My sister is ______. She had a birthday party on her ______ birthday. A. twenty; twentieth B. twentieth; twenty C. twenty; twenty D. twentieth; twentieth 34. There are five ______ people in the city. A. million B. millions C. millions of D. million of 35. We all enjoyed ______ at the school party last night. A. ourselves B. ourself C. us D. we 36. This room is ______ as that one. A. three times as big B. three time as big C. three times so big D. three time bigger 37. ______ of the two roads leads to the station. You can take either. A. Both B. All C. Neither D. Either 38. She has only ______ money left. She can’t buy the book. A. a few B. a little C. few D. little 39. My father is a ______ man. He is ______. A. 40-year-old; 40 years old B. 40 years old; 40-year-old C. 40-years-old; 40 years old D. 40-year-old; 40-years-old 40. I don’t like this shirt. Could you show me ______ one? A. other B. others C. the other D. another 41. There are twenty students in the class. ______ are boys, and ______ are girls. A. Twelve; eighth B. Twelve; eight C. Twelfth; eighth D. Twelfth; eight 42. I have two brothers. One is a teacher, ______ is a doctor. A. another B. other C. the other D. others 43. This is my ______ visit to Beijing. I’m very excited. A. one B. first C. the first D. firstly 44. The old man lives ______, but he doesn’t feel ______. A. by himself; alone B. by himself; lonely C. alone; lonely D. lonely; alone 45. The bridge is about ______ long. A. two hundred meters B. two hundreds meters C. two hundred meter D. two hundreds meter 46.（2022年职教高考真题第22题） The train then was very slow, so ___ people liked taking trains. A. a few B. little C. few D. a little 47.（2022年职教高考真题第23题）I go to the library ______. A. two times a week B. two times one week C. twice a week D. a twice times a week 48.（2023年职教高考真题第10题）Our room is very big, but ______ is bigger than ______. A. their; our B. their; ours C. theirs; ours D. theirs; our 49．（2023年职教高考真题第11题）There are four ______ students in our school. A. thousands B. thousand C. thousand of D. thousands of 50.（2024年职教高考真题第7题）She has a ______ daughter. A. three year old B. three year-old C. three-year-old D. three-years-old 51.（2024年职教高考真题第8题）I was surprised when I met a friend of ______ and a friend of ______ at the same place. A. me; I B. me; hers C. hers; mine D. she; I 52.（2025年职教高考真题第10题）I have two books. ______ of them are on the desk. A. All B. Both C. One D. Each 53.（2025年职教高考真题第11题）______ school is very beautiful. How about ______? A. Ours; yours B. Our; yours C. Our; your D. Ours; your 54.（2026年职教高考真题第10题）There are four seasons in a year and Summer is the ______. A. two B. twice C. second D. first 55.（2025年职教高考真题第12题）There are rooms on the floor. A.four,three B.fourth; three C.four, third D. fourth; third 原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $ 编写说明：2027年云南省（职教高考）《英语一轮讲练测》内含复习讲义、复习课件、专项训练、综合训练，在编写中融入支架式教学理念，紧扣教材，将知识拆解整合为体系化专题清单，以挖空式讲解搭配知识再现型练习筑牢基础，再通过分层专项训练、综合进阶训练实现知识巩固与能力提升。针对性强，实操性好，为一轮复习搭建从知识梳理到能力突破的完整进阶路径，高效赋能备考提分。 本专题是2027年云南省（职教高考）《英语一轮讲练测》的第2个专题，内容为代词、数词。 2027年云南省（职教高考）《英语一轮讲练测》 专题2 代词、数词（专项训练） 目录 01 系列考点夯实练 02 核心突破提升练 03 真题溯源过关练 【考点1 代词】 1. — Is this ______ dictionary? — No, it’s not ______. It’s ______. A. your; mine; hers B. yours; my; her C. your; my; her D. yours; mine; hers 【答案】A 【详解】 第一空后有名词 dictionary，需用形容词性物主代词 your；第二空后无名词，需用名词性物主代词 mine；第三空后无名词，需用名词性物主代词 hers。句意：“这是你的字典吗？”“不，它不是我的。它是她的。”故选 A。 2. Our classroom is clean, but ______ is cleaner than ______. A. their; our B. theirs; ours C. their; ours D. theirs; our 【答案】B 【详解】 第一空作主语，表示“他们的教室”，需用名词性物主代词 theirs；第二空在介词 than 后，表示“我们的教室”，需用名词性物主代词 ours。句意：我们的教室很干净，但他们的比我们的更干净。故选 B。 3. I saw ______ in the park yesterday afternoon. A. they B. their C. them D. theirs 【答案】C 【详解】 动词 saw 后接宾语，需用宾格形式。them 是 they 的宾格，意为“他们”。句意：我昨天下午在公园里看见了他们。故选 C。 4. The children enjoyed ______ at the birthday party. A. them B. their C. themselves D. theirs 【答案】C 【详解】 “enjoy oneself”是固定短语，意为“玩得开心”。主语 The children 是复数，反身代词用 themselves。句意：孩子们在生日聚会上玩得很开心。故选 C。 5. My brother taught ______ English by watching videos. A. he B. him C. his D. himself 【答案】D 【详解】 “teach oneself”是固定搭配，意为“自学”。主语 My brother 是第三人称单数男性，反身代词用 himself。句意：我哥哥通过看视频自学英语。故选 D。 6. ______ of the two answers is correct. Please try again. A. Both B. All C. Neither D. Either 【答案】C 【详解】 根据“Please try again.”可知两个答案都不正确，表示“两者都不”用 neither。句意：这两个答案都不正确。请再试一次。故选 C。 7. There are many trees on ______ side of the street. A. both B. all C. every D. either 【答案】D 【详解】 street（街道）有两边，side 是单数形式，表示“每一边”用 either。both 后接复数名词。句意：街道的每一边都有很多树。故选 D。 8. Some people like coffee, ______ prefer tea. A. other B. others C. the other D. another 【答案】B 【详解】 others 泛指“其他人或物”，相当于“other + 复数名词”，常与 some 连用。句意：有些人喜欢咖啡，另一些人更喜欢茶。故选 B。 9. I don’t have ______ money with me. Could you lend me ______? A. some; any B. any; some C. any; any D. some; some 【答案】B 【详解】 否定句中用 any；疑问句中表示“请求”时用 some。第一句是否定句，用 any；第二句是请求对方借一些钱，用 some。句意：我身上没有带钱。你能借我一些吗？故选 B。 10. There is ______ milk in the fridge. Let’s go and buy some. A. Few B. a few C. little D. a little 【答案】C 【详解】 milk 是不可数名词，排除修饰可数名词的 few/a few（A、B 选项）。根据“Let’s go and buy some.”可知冰箱里几乎没有牛奶了，表否定含义，用 little。句意：冰箱里几乎没有牛奶了。我们去买一些吧。故选 C。 11. I have ______ friends in this city, so I don’t feel lonely. A. Few B. a few C. little D. a little 【答案】B 【详解】 friends 是可数名词复数，排除修饰不可数名词的 little/a little（C、D 选项）。根据“I don’t feel lonely”可知我有一些朋友，表肯定含义，用 a few。句意：我在这个城市有几个朋友，所以我不感到孤独。故选 B。 12. The book on the desk is ______. Please give it to ______. A. his; him B. his; his C. him; his D. him; him 【答案】A 【详解】 第一空后无名词，表示“他的书”，用名词性物主代词 his；第二空在介词 to 后，需用宾格 him。句意：桌子上的书是他的。请把它给他。故选 A。 13. — Who is knocking at the door? — ______ must be Tom. A. He B. It C. This D. That 【答案】B 【详解】 在不知道敲门人性别时，常用 it 指代。句意：“谁在敲门？”“一定是汤姆。”故选 B。 14. ______ of the students in our class has a new dictionary. A. Every B. Each C. Both D. All 【答案】B 【详解】 谓语动词 has 是单数形式，排除 both（谓语用复数）和 all（指人时谓语用复数）。every 不能与 of 连用，each of... 结构正确。句意：我们班每个学生都有一本新字典。故选 B。 15. Help ______ to some fish, children! A. You B. your C. yourself D. yourselves 【答案】D 【详解】 “help oneself to”是固定短语，意为“随便吃/用”。主语是 children，为复数，反身代词用 yourselves。句意：孩子们，请随便吃些鱼吧！故选 D。 【考点2 数词】 16. There are ______ days in a week. A. the seven B. seventh C. seven D. the seventh 【答案】C 【详解】 表示“七天”用基数词 seven，表示数量。句意：一周有七天。故选 C。 17. He lives on ______ floor of the building. A. five B. fifth C. the five D. the fifth 【答案】D 【详解】 表示“在第几层”用“the + 序数词 + floor”。句意：他住在大楼的五楼。故选 D。 18. Please read ______ to us. A. Lesson Ten B. the Lesson Ten C. the Tenth Lesson D. Tenth Lesson 【答案】A 【详解】 编号表达：名词 + 基数词（首字母大写），即 Lesson Ten；也可以用“the + 序数词 + 名词”，即 the Tenth Lesson。四个选项中 A 符合编号表达。句意：请给我们读第十课。故选 A。 19. My cousin is a ______ boy. A. five-years-old B. five-year-old C. five years old D. five year old 【答案】B 【详解】 作定语修饰名词 boy 时，用带连字符的复合形容词“five-year-old”，year 用单数。句意：我的表弟是一个五岁的男孩。故选 B。 20. It’s 9:45. We can also say it’s ______. A. nine forty-five B. a quarter to nine C. a quarter past nine D. half past nine 【答案】A 【详解】 9:45 可以读作 nine forty-five，也可以读作 a quarter to ten（十五分钟到十点）。a quarter to nine 是 8:45，a quarter past nine 是 9:15，half past nine 是 9:30。故选 A。 21. There are about two ______ students in our school. A. thousands B. thousand C. thousands of D. thousand of 【答案】B 【详解】 thousand 前有具体数字 two，用单数形式，不加 s，不加 of。句意：我们学校大约有两千名学生。故选 B。 22. September is ______ month of the year. A. the ninth B. the nineth C. nine D. ninth 【答案】A 【详解】 九月是一年中的第九个月，用序数词 ninth，且序数词前需加定冠词 the。nine 的序数词是 ninth（去 e 加 th）。句意：九月是一年中的第九个月。故选 A。 23. He was born on ______. A. 1999 June 1 B. June 1, 1999 C. 1999 1 June D. 1 June 1999年 【答案】B 【详解】 英语日期表达常用“月日，年”或“日月，年”两种形式。B 选项“June 1, 1999”是正确表达。句意：他出生于 1999 年 6 月 1 日。故选 B。 24. ______ people visited the exhibition last week. A. Hundred B. Hundreds C. Hundreds of D. Hundred of 【答案】C 【详解】 表示“数百的”，用“hundreds of”，为泛指，hundred 后加 s 加 of。句意：上周有数百人参观了展览。故选 C。 25. We are in ______ now. A. the 21 century B. 21 century C. the 21st century D. 21st century 【答案】C 【详解】 表示“在 21 世纪”用“in the 21st century”，世纪前加 the，序数词用缩写 21st。句意：我们现在在 21 世纪。故选 C。 26. Please turn to ______. A. Page 5 B. the page 5 C. 5 Page D. the 5 page 【答案】A 【详解】 表示页码用“Page + 基数词”，P 大写。句意：请翻到第 5 页。故选 A。 27. He got ______ in the English exam. A. score 90 B. 90 score C. a 90 D. 90 scores 【答案】C 【详解】 表示“90分”，用“a + 基数词”，a 90 意为“一个 90 分”。句意：他英语考试得了 90 分。故选 C。 28. My grandmother is ______ years old. A. seventy B. the seventy C. seventieth D. the seventieth 【答案】A 【详解】 表示年龄用基数词，且前不加 the。句意：我奶奶七十岁了。故选 A。 29. There are ______ people in my family. A. the fourth B. four C. fourth D. the four 【答案】B 【详解】 表示“四口人”用基数词 four。句意：我家有四口人。故选 B。 30. He came ______ in the race. A. two B. the two C. second D. the second 【答案】D 【详解】 表示“在比赛中获得第二名”，“the + 序数词”表示顺序。句意：他在比赛中获得了第二名。故选 D。 31. ______ room is much bigger than ______. A. Ours; theirs B. Our; their C. Our; theirs D. Ours; their 【答案】C 【详解】 第一空后有名词 room，用形容词性物主代词 Our；第二空后无名词，用名词性物主代词 theirs。句意：我们的房间比他们的大得多。故选 C。 32. ______ of the three students can answer the question. Let me teach you. A. Both B. All C. None D. Neither 【答案】C 【详解】 根据“Let me teach you.”可知三个学生都不会，表示“三个都不”用 none。句意：这三个学生没有一个能回答这个问题。让我教你们。故选 C。 33. My sister is ______. She had a birthday party on her ______ birthday. A. twenty; twentieth B. twentieth; twenty C. twenty; twenty D. twentieth; twentieth 【答案】A 【详解】 第一空表示年龄“20岁”，用基数词 twenty；第二空表示“第20个生日”，用序数词 twentieth。句意：我姐姐20岁了。她过了她的20岁生日。故选 A。 34. There are five ______ people in the city. A. million B. millions C. millions of D. million of 【答案】A 【详解】 million 前有具体数字 five，用单数形式，不加 s，不加 of。句意：这个城市有五百万人口。故选 A。 35. We all enjoyed ______ at the school party last night. A. ourselves B. ourself C. us D. we 【答案】A 【详解】 “enjoy oneself”是固定短语。主语 We 是复数，反身代词用 ourselves。句意：昨晚我们在学校聚会上都玩得很开心。故选 A。 36. This room is ______ as that one. A. three times as big B. three time as big C. three times so big D. three time bigger 【答案】A 【详解】 倍数表达结构为“A is + 倍数 + as + 原级 + as + B”。句意：这个房间是那个房间的三倍大。故选 A。 37. ______ of the two roads leads to the station. You can take either. A. Both B. All C. Neither D. Either 【答案】D 【详解】 根据“You can take either.”可知两条路中的任何一条都能到车站。表示“两者中的任何一个”用 either。句意：这两条路中的任何一条都通往车站。你可以任选一条。故选 D。 38. She has only ______ money left. She can’t buy the book. A. a few B. a little C. few D. little 【答案】D 【详解】 money 是不可数名词，排除修饰可数名词的 few/a few（A、C 选项）。根据“She can’t buy the book”可知钱很少、几乎没有，表否定含义，用 little。句意：她几乎没剩下什么钱了。她买不起那本书。故选 D。 39. My father is a ______ man. He is ______. A. 40-year-old; 40 years old B. 40 years old; 40-year-old C. 40-years-old; 40 years old D. 40-year-old; 40-years-old 【答案】A 【详解】 第一空作定语修饰 man，用“40-year-old”，year 用单数；第二空作表语，用“40 years old”，year 用复数。句意：我父亲是一个40岁的男人。他40岁了。故选 A。 40. I don’t like this shirt. Could you show me ______ one? A. other B. others C. the other D. another 【答案】D 【详解】 表示“另一件（衬衫）”，泛指三者或三者以上的另一个，用 another。句意：我不喜欢这件衬衫。你能给我看看另一件吗？故选 D。 41. There are twenty students in the class. ______ are boys, and ______ are girls. A. Twelve; eighth B. Twelve; eight C. Twelfth; eighth D. Twelfth; eight 【答案】B 【详解】 两个空都表示数量，用基数词 twelve（12）和 eight（8）。句意：班里有20个学生。12个是男生，8个是女生。故选 B。 42. I have two brothers. One is a teacher, ______ is a doctor. A. another B. other C. the other D. others 【答案】C 【详解】 两者中的另一个用 the other，常与 one 连用构成“one...the other...”。句意：我有两个兄弟。一个是老师，另一个是医生。故选 C。 43. This is my ______ visit to Beijing. I’m very excited. A. one B. first C. the first D. firstly 【答案】B 【详解】 表示“第一次访问”，my 后直接用序数词 first（序数词前已有物主代词时，不加 the）。句意：这是我第一次访问北京。我非常兴奋。故选 B。 44. The old man lives ______, but he doesn’t feel ______. A. by himself; alone B. by himself; lonely C. alone; lonely D. lonely; alone 【答案】B 【详解】 “by himself”意为“独自地”，相当于 alone（单独地，强调客观状态）。lonely 意为“孤独的，寂寞的”，强调主观感受。句意：这位老人独自居住，但他不感到孤独。故选 B。 45. The bridge is about ______ long. A. two hundred meters B. two hundreds meters C. two hundred meter D. two hundreds meter 【答案】A 【详解】 hundred 前有具体数字 two，用单数形式不加 s；meter 是可数名词，复数加 s。句意：这座桥大约200米长。故选 A。 46.（2022年职教高考真题第22题） The train then was very slow, so ___ people liked taking trains. A. a few B. little C. few D. a little 【答案】C 【详解】 people（人们）是可数名词复数，排除修饰不可数名词的 little / a little（B、D 选项）。few：表示几乎没有，含否定含义; a few：表示有一些，含肯定含义。结合句意原句：那时候火车很慢，所以几乎没人喜欢坐火车。前半句 “火车很慢”，推导得出否定含义，因此选 few 47.（2022年职教高考真题第23题）I go to the library ______. A. two times a week B. two times one week C. twice a week D. a twice times a week 【答案】C 【详解】 考查频度表达。“一周两次”用twice a week，固定表达。“一次”是once，“两次”是twice，“三次”及以上用“基数词+times”。故选C。 48.（2023年职教高考真题第10题）Our room is very big, but ______ is bigger than ______. A. their; our B. their; ours C. theirs; ours D. theirs; our 【答案】C 【详解】 考查物主代词。第一空为主语，表示“他们的房间”，需用名词性物主代词theirs；第二空在than后，表示“我们的房间”，需用名词性物主代词ours。故选C。 49．（2023年职教高考真题第11题）There are four ______ students in our school. A. thousands B. thousand C. thousand of D. thousands of 【答案】B 【详解】 考查数词。hundred/thousand/等前有具体数字时，用单数形式，不加s，不加of。four thousand“四千”。故选B。 50.（2024年职教高考真题第7题）She has a ______ daughter. A. three year old B. three year-old C. three-year-old D. three-years-old 【答案】C 【详解】 考查复合形容词作定语。表示“三岁的”，需要用带连字符的复合形容词“three-year-old”，名词year用单数。故选C。 51.（2024年职教高考真题第8题）I was surprised when I met a friend of ______ and a friend of ______ at the same place. A. me; I B. me; hers C. hers; mine D. she; I 【答案】C 【详解】 考查双重所有格。“a friend of + 名词性物主代词”表示“……的一个朋友”。第一空：a friend of hers“她的一个朋友”；第二空：a friend of mine“我的一个朋友”。故选C。 52.（2025年职教高考真题第10题）I have two books. ______ of them are on the desk. A. All B. Both C. One D. Each 【答案】B 【详解】 考查不定代词。前文提到“two books”，两者都应用both。句意：我有两本书。它们都在桌子上。故选B。 53.（2025年职教高考真题第11题）______ school is very beautiful. How about ______? A. Ours; yours B. Our; yours C. Our; your D. Ours; your 【答案】B 【详解】 考查物主代词。第一空后有名词school，需用形容词性物主代词Our；第二空后无名词，需用名词性物主代词yours (= your school)。故选B。 54.（2026年职教高考真题第10题）There are four seasons in a year and Summer is the ______. A. two B. twice C. second D. first 【答案】C 【详解】 考查序数词。表示顺序“第二个季节”，夏天是一年中的第二个季节。故选C。 55.（2025年职教高考真题第12题）There are rooms on the floor. A.four,three B.fourth; three C.four, third D. fourth; third 【答案】C 【详解】 第一空后是 rooms（房间，复数名词），表示数量，要用基数词：four（四），排除 B、D（fourth 是序数词，表 “第四”）。 第二空表达 “在三楼”，固定用法 on the + 序数词 + floor，three 的序数词是 third。 原创精品资源学科网独家享有版权，侵权必究！ 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $